/* 底部样式 */
footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 40px 0 20px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-section {
    flex: 1;
    min-width: 250px;
    padding: 0 15px;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #ecf0f1;
}

.footer-section p {
    margin-bottom: 10px;
    color: #bdc3c7;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    margin-top: 20px;
    color: #bdc3c7;
    font-size: 14px;
}